20200220440 has 32 divisors (see below), whose sum is σ = 45713231280. Its totient is φ = 8033379712.

The previous prime is 20200220413. The next prime is 20200220497. The reversal of 20200220440 is 4402200202.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1452634 + ... + 1466473.

Almost surely, 2^20200220440 is an apocalyptic number.

20200220440 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

20200220440 is an abundant number, since it is smaller than the sum of its proper divisors (25513010840).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20200220440 is a wasteful number, since it uses less digits than its factorization.

20200220440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2919291 (or 2919287 counting only the distinct ones).

The product of its (nonzero) digits is 256, while the sum is 16.

Adding to 20200220440 its reverse (4402200202), we get a palindrome (24602420642).

The spelling of 20200220440 in words is "twenty billion, two hundred million, two hundred twenty thousand, four hundred forty".